When holding U-235 with the cursor, the engineer receives radiation damage. This continues if a train is entered.
With the U-235 held by the cursor, the damage will stop ticking if the "enable logistics while [train is] moving" check box is toggled on.
Reproduction
Enter train with a single stack of U-235 in inventory (engineer will be receiving damage).
Open Fuel tab of locomotive.
Pick up U-235 in the cursor.
Toggle the "Enable Logistics While Moving" check box.
Engineer will not take radiation damage until U-235 is returned the the engineer's inventory.
Description
When holding U-235 with the cursor, the engineer receives radiation damage. This continues if a train is entered. With the U-235 held by the cursor, the damage will stop ticking if the "enable logistics while [train is] moving" check box is toggled on.
Reproduction